3821

3,821 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 3821 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

3821 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 3821:

3821

See below for interesting mathematical facts about the number 3821 from the Numbermatics database.


Names of 3821

  • Cardinal: 3821 can be written as Three thousand, eight hundred twenty-one.

Scientific notation

  • Scientific notation: 3.821 × 103

Factors of 3821

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 3821

Divisors of 3821

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 3822
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 3821 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 3820

Bases of 3821

  • Binary: 1110111011012
  • Hexadecimal: 0xEED
  • Base-36: 2Y5

Squares and roots of 3821

  • 3821 squared (38212) is 14600041
  • 3821 cubed (38213) is 55786756661
  • The square root of 3821 is 61.8142378421
  • The cube root of 3821 is 15.6336005983

Scales and comparisons

How big is 3821?
  • 3,821 seconds is equal to 1 hour, 3 minutes, 41 seconds.
  • To count from 1 to 3,821 would take you about three minutes.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 3821 cubic inches would be around 1.3 feet tall.

Recreational maths with 3821

  • 3821 backwards is 1283
  • 3821 is a twin prime! Its twin is 3823
  • The number of decimal digits it has is: 4
  • The sum of 3821's digits is 14
  • More coming soon!

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"Number 3821 - Facts about the integer". Numbermatics.com. 2024. Web. 29 March 2024.

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Numbermatics. (2024). Number 3821 - Facts about the integer. Retrieved 29 March 2024, from https://numbermatics.com/n/3821/

Chicago style:
Numbermatics. 2024. "Number 3821 - Facts about the integer". https://numbermatics.com/n/3821/

The information we have on file for 3821 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

Keywords: Divisors of 3821, math, Factors of 3821, curriculum, school, college, exams, university, Prime factorization of 3821, STEM, science, technology, engineering, physics, economics, calculator, three thousand, eight hundred twenty-one.

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